public XDebuggerExpressionComboBox(
     @NotNull Project project,
     @NotNull XDebuggerEditorsProvider debuggerEditorsProvider,
     @Nullable @NonNls String historyId,
     @Nullable XSourcePosition sourcePosition,
     boolean showEditor) {
   super(project, debuggerEditorsProvider, EvaluationMode.EXPRESSION, historyId, sourcePosition);
   myComboBox = new ComboBox<>(100);
   myComboBox.setEditable(true);
   myExpression = XExpressionImpl.EMPTY_EXPRESSION;
   Dimension minimumSize = new Dimension(myComboBox.getMinimumSize());
   minimumSize.width = 100;
   myComboBox.setMinimumSize(minimumSize);
   initEditor();
   fillComboBox();
   myComponent = decorate(myComboBox, false, showEditor);
 }